Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 211116
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
716 AM EDT Thu Jun 21 2018

Coastal waters from the Merrimack River MA to Watch Hill RI out to
25 NM

ANZ200-220000-
716 AM EDT Thu Jun 21 2018

.Synopsis for Massachusetts and Rhode Island coastal waters...
Low pres near the New Jersey coast early this morning will track  S
of Long Island today. The system will bring showers, with some heavy
downpours, and patchy fog across the southern waters  through midday
then will move offshore. High pres builds across the waters tonight
and Fri. Low pres and an associated warm front will approach late
Fri night, bringing showers Sat into Sat  night. Showers may linger
as a cold front approaches Sunday.

For information on possible hazardous weather beyond the 24-36
hour forecast period, please visit www.weather.gov/boston and
follow the Current Hazards link above the map on the left.

$$

ANZ250-220000-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
716 AM EDT Thu Jun 21 2018

.TODAY...W winds 5 to 10 kt, becoming E this afternoon. Seas 2 to
3 ft.
.TONIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Patchy fog.
Vsby 1 NM or less.
.FRI...E winds 5 to 10 kt. Seas around 2 ft.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT...E winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft.
A chance of showers.
.SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. Showers likely.
.SUN...S winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of
showers.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers.
.MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ251-220000-
Massachusetts Bay and Ipswich Bay-
716 AM EDT Thu Jun 21 2018

.TODAY...W winds around 5 kt, becoming E this afternoon. Seas
1 foot or less.
.TONIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. Patchy fog.
Vsby 1 to 3 NM.
.FRI...E winds 5 to 10 kt. Seas around 2 ft.
.FRI NIGHT...SE winds 5 to 10 kt. Seas around 2 ft.
.SAT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.SAT NIGHT...NE winds 5 to 10 kt, becoming E after midnight. Seas
2 to 3 ft. Showers likely.
.SUN...SW winds around 5 kt. Seas around 2 ft. A chance of
showers.
.SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.MON...NW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.MON NIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ231-220000-
Cape Cod Bay-
716 AM EDT Thu Jun 21 2018

.TODAY...SW winds 5 to 10 kt, becoming SE this afternoon. Seas
1 foot or less. A chance of showers this morning.
.TONIGHT...E winds 5 to 10 kt. Seas 1 foot or less. Patchy fog.
Vsby 1 NM or less.
.FRI...E winds 5 to 10 kt. Seas 1 foot or less.
.FRI NIGHT...E winds 5 to 10 kt. Seas 1 foot or less. A chance of
showers.
.SAT...E winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas
around 2 ft. A chance of showers.
.SAT NIGHT...NE winds around 5 kt, becoming SE after midnight.
Seas 1 foot or less. Showers likely.
.SUN...SW winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.MON...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.MON NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ254-220000-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
716 AM EDT Thu Jun 21 2018

.TODAY...SW winds 5 to 10 kt, becoming S this afternoon. Seas
2 to 3 ft. Showers likely this morning. A chance of showers this
afternoon. Vsby 1 to 3 NM.
.TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby
1 NM or less.
.FRI...E winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas
2 to 3 ft. Patchy fog. Vsby 1 to 3 NM.
.FRI NIGHT...E winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.SAT...E winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Gusts up to 20 kt. Seas 3 to 5 ft. A chance of
showers.
.SAT NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 2 to 4 ft. Showers likely. Vsby 1 NM or less.
.SUN...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 3 to 5 ft.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. A chance of showers.
.MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ255-220000-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
716 AM EDT Thu Jun 21 2018

.TODAY...SW winds 5 to 10 kt, becoming SE this afternoon. Seas
around 2 ft. Patchy fog. Showers, mainly this morning. Vsby 1 NM
or less, increasing to 1 to 3 NM this afternoon.
.TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby
1 NM or less.
.FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Patchy fog. Vsby 1 to 3 NM.
.FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. A chance of showers.
.SAT...E winds 10 to 15 kt with gusts up to 25 kt, diminishing to
5 to 10 kt in the afternoon. Seas 4 to 6 ft. A chance of showers.
.SAT NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 3 to 5 ft. Showers likely. Vsby 1 to 3 NM.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. A chance of showers.
.SUN NIGHT...SW winds 10 to 15 kt. Seas 4 to 7 ft.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. A chance of showers.
.MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ256-220000-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
716 AM EDT Thu Jun 21 2018

.TODAY...SE winds 5 to 10 kt. Gusts up to 20 kt this afternoon.
Seas around 2 ft. Patchy fog. Showers, mainly this morning. Vsby
1 to 3 NM.
.TONIGHT...E winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less.
.FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.FRI NIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas
4 to 6 ft. A chance of showers.
.SAT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to
6 ft. A chance of showers.
.SAT NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 3 to 5 ft. Showers likely. Vsby 1 to 3 NM.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. A chance of showers.
.SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
5 to 7 ft.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft.
.MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ232-220000-
Nantucket Sound-
716 AM EDT Thu Jun 21 2018

.TODAY...SW winds 5 to 10 kt, becoming S this afternoon. Seas
1 foot or less. Showers, mainly this morning.
.TONIGHT...E winds 5 to 10 kt. Seas 1 foot or less. Patchy fog.
Vsby 1 NM or less.
.FRI...E winds 5 to 10 kt with gusts up to 20 kt. Seas around
2 ft. Patchy fog. Vsby 1 to 3 NM.
.FRI NIGHT...E winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. A chance of showers.
.SAT...E winds 5 to 10 kt. Gusts up to 25 kt in the morning. Seas
2 to 3 ft. A chance of showers.
.SAT NIGHT...E winds 5 to 10 kt, becoming S with gusts up to
20 kt after midnight. Seas 2 to 3 ft. Showers likely. Vsby 1 to
3 NM.
.SUN...SW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft.
.MON...NW winds around 10 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ233-220000-
Vineyard Sound-
716 AM EDT Thu Jun 21 2018

.TODAY...SW winds 5 to 10 kt, becoming SE this afternoon. Seas
around 2 ft. Showers, mainly this morning.
.TONIGHT...E winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby
1 NM or less.
.FRI...E winds 5 to 10 kt with gusts up to 20 kt. Seas around
2 ft. Patchy fog. Vsby 1 to 3 NM.
.FRI NIGHT...E winds around 10 kt with gusts up to 20 kt. Seas
around 2 ft. A chance of showers.
.SAT...E winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas
around 2 ft. A chance of showers.
.SAT NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas
2 to 3 ft. Showers likely. Vsby 1 to 3 NM.
.SUN...SW winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers.
.SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 4 ft.
.MON...NW winds around 10 kt. Seas 2 to 4 ft. A chance of
showers.
.MON NIGHT...N winds around 10 kt with gusts up to 20 kt. Seas
2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ234-220000-
Buzzards Bay-
716 AM EDT Thu Jun 21 2018

.TODAY...SW winds 5 to 10 kt, becoming SE this afternoon. Seas
1 foot or less. Showers, mainly this morning.
.TONIGHT...E winds 5 to 10 kt. Seas 1 foot or less. Patchy fog.
Vsby 1 to 3 NM.
.FRI...E winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas 1 foot or less.
.FRI NIGHT...E winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. A chance of showers.
.SAT...E winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas
around 2 ft. A chance of showers.
.SAT NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas
around 2 ft. Showers likely.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.MON...NW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.MON NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ235-220000-
Rhode Island Sound-
716 AM EDT Thu Jun 21 2018

.TODAY...S winds 5 to 10 kt, becoming SE this afternoon. Seas
around 2 ft. Showers, mainly this morning. Patchy fog this
morning.
.TONIGHT...E winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby
1 NM or less.
.FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of showers.
.SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers.
.SAT NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas
2 to 4 ft. Showers likely. Vsby 1 to 3 NM.
.SUN...SW winds 10 to 15 kt. Seas 3 to 5 ft. A chance of showers.
.SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft.
.MON...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers.
.MON NIGHT...N winds around 10 kt with gusts up to 20 kt. Seas
3 to 5 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ237-220000-
Block Island Sound-
716 AM EDT Thu Jun 21 2018

.TODAY...SE winds 5 to 10 kt. Seas around 2 ft. Showers, mainly
this morning. Patchy fog this morning with vsby 1 to 3 NM.
.TONIGHT...E winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby
1 NM or less.
.FRI...E winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft.
.FRI NIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 5 ft. A chance of showers.
.SAT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft. A chance of showers.
.SAT NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas
2 to 4 ft. Showers likely. Vsby 1 to 3 NM.
.SUN...SW winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers.
.SUN NIGHT...W winds 5 to 10 kt. Seas 3 to 5 ft.
.MON...NW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
.MON NIGHT...N winds 5 to 10 kt. Seas 2 to 4 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ230-220000-
Boston Harbor-
716 AM EDT Thu Jun 21 2018

.TODAY...W winds around 5 kt, becoming E this afternoon. Waves
1 foot or less. A slight chance of showers this afternoon.
.TONIGHT...NE winds around 5 kt. Waves 1 foot or less.
.FRI...E winds 5 to 10 kt. Waves 1 foot or less.
.FRI NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less.
.SAT...E winds 5 to 10 kt. Waves 1 foot or less. A chance of
showers.
.SAT NIGHT...E winds around 5 kt. Waves 1 foot or less. Showers
likely.
.SUN...SW winds around 5 kt. Waves 1 foot or less. A chance of
showers.
.SUN NIGHT...W winds around 5 kt. Waves 1 foot or less. A chance
of showers.
.MON...NW winds 5 to 10 kt. Waves around 2 ft. A chance of
showers.
.MON NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ236-220000-
Narragansett Bay-
716 AM EDT Thu Jun 21 2018

.TODAY...S winds around 5 kt, becoming SE this afternoon. Waves
1 foot or less. Showers, mainly this morning.
.TONIGHT...E winds 5 to 10 kt, becoming NE after midnight. Waves
around 2 ft. Patchy fog. Vsby 1 to 3 NM.
.FRI...E winds 5 to 10 kt. Waves around 2 ft.
.FRI NIGHT...E winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Waves 2 to 3 ft. A chance of showers.
.SAT...NE winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers.
.SAT NIGHT...E winds around 5 kt, becoming S after midnight.
Waves 2 to 3 ft. Showers likely. Vsby 1 to 3 NM.
.SUN...SW winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers.
.SUN NIGHT...W winds 5 to 10 kt. Waves 2 to 3 ft.
.MON...NW winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers.
.MON NIGHT...N winds 5 to 10 kt. Waves 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

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